The largest minority group in the world is people with disabilities. According to the World Health Organization (WHO), around 15% of the world's population, or over one billion people, live with some form of disability. This includes physical, sensory, intellectual, and mental health impairments. This number is expected to increase as the world's population ages, and as more people survive injuries and illnesses that would have been fatal in the past.

This group of people is considered as a minority due to the lack of accessibility and social inclusion that they face in many societies. They are often excluded from education, employment, and other opportunities, and they may also face discrimination and stigma.

Additionally, people with disabilities are often marginalized and disadvantaged in many societies, facing barriers to access to basic rights, services, and opportunities. Many countries have laws and policies in place to protect the rights of people with disabilities, but these are not always enforced or implemented effectively, leading to continued discrimination and marginalization.

Overall, people with disabilities are the largest minority group in the world, and their rights, inclusion, and well-being is of utmost importance.